Stihl Back pack blower

Discussion in 'Mechanic and Repair' started by lalllc, Mar 2, 2013.

  1. lalllc

    lalllc LawnSite Member
    Posts: 68

    I have a 3 year old, br 600 mag. back pack blower. I have a hard time keeping it running after it worms up. It starts fine. Will not idel have to keep my finger on trigger to keep it running. I did all PM's on it. new plugs, filter, primer bulb. I cleaned out the carb. it looked good. what gives? do I need to buy a new carb? I looked at the cable, I cant tell if it needs to be tightened . I have a 550 and All I did to that one was new plugs. I have a new 600 in a box but I dont want to pull it out until I have to. :confused:
     
  2. Valk

    Valk LawnSite Silver Member
    Posts: 2,711

    How do the fuel lines look? Cheap to replace...
     
  3. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,088

    Did you adjust the valves correctly?
     
  4. lalllc

    lalllc LawnSite Member
    Posts: 68

    I did not touch the valves, nor will I. I'm not that handy with motors. I will look at fuel lines. However I think they are ok.
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  5. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,088

    Well they need to be checked and likely adjusted. In the future it might be better to get units that don't have valves.....like Echo. Maybe trade the one in the box or at least go with BR430 stihl.
     
  6. lawnboy dan

    lawnboy dan LawnSite Gold Member
    Posts: 3,712

    carb needs adjustment.
     
  7. dKoester

    dKoester LawnSite Gold Member
    Posts: 3,242

    Did he change the fuel filter?
     
  8. windflower

    windflower LawnSite Bronze Member
    Posts: 1,079

    Try swapping the ignition module from the new one to the old one and see if it helps. I've had to replace this part on 2 stihl engines. When they go bad it can look like a fuel or carb problem. The module is easy to get to and the gap doesn't seem to be critical. I fold the box top (that the part came in) over and set the gap to twice the thickness of the cardboard. Ends up with 1/32 to 1/16 inch gap. Both engines had about 3 or 4 seasons on them.
     
  9. lalllc

    lalllc LawnSite Member
    Posts: 68

    I did put a new fuel filter in. So yes.
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  10. lalllc

    lalllc LawnSite Member
    Posts: 68

    If its a valve thing, I will have to take it in.
    Posted via Mobile Device
     

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